Tabulating machine



' Dec. 10, 1940 w, w, MCDOWELL 22,24,769

TABULATING MACHINE FiledDec. '12, 1935 TSheecs-Sheet 1 ATT'ORNEY Dec. 10, 1940. w. w. M DOWELL TABULATING MIACHINE 7 Sheets-Sheet 2 Filed Dec m BY 24. ATTORNEY $33-$33: Rmmmmmmmmwmmmmm mmnummmmumnmnmmm 22.2223 8:32am RBRRR: $38323 ma ma: 33333 4:22:33 F 2 v 222830 Dec. 10, 1940. w. w. M DOWELL 7 9 TABULATING MACHINE Filed Dec. 12, 1935 v 7 sheetsisheei 3 FIGS;

CREMATION CERTIFICATE *EWO FROM TO FROM TO 8323 B336 9859 9920 B349 8361 9924 9930- 8365 8368 9940 9949 8660 8731 9995 9997 B908 8911 10335 10344 8913 8926 10374 10376 8953 5933 10392 10403 8940 3959 10407 10413 9979 9024 10480 10465 9425 9500 10523 10525 9601v 9623 105250 10525 9774 9826 10535 10535 9830 9836 10560 10562 9544 9854- 10623 10634 /mvE \ITOR ATTORNEY Dec. 10, 1940. w. w MCDOWELL 2,224,769

TABULATING MACHINE Filed Dec. -12, 1955 7 Shets-Sheet 4 FIGS.

a 1&3

ATTORNEY Dec. 10, 1940. I I w w, MCDOWELL 2,224,769

TABULAT ING MACHINE v Filed Dec. 12, 1935 '7 Sheets- Sheet 5 l SM 7 A c c a L 24 L32 C L21 6a 7 6 us LLM 267 McRl' INVENILOR- o 7 BY M ArToRNEY Dec. 10, 1940. w.w. M DOWELL I 7 TABULATING MACHINE 7 Filed Dec. 12, 1935 7 Sheets-Sheet 7 FIG.10.

(I/Pill! T 1 77 Elli/(IRE 70741 #191177 iM/ITtRS r4741 nmvz C/kCl/IT INVENTOR ATTO R N EY Patented Dec 10, 1940 TABULATING MACHINE William W. McDowell, Binghamton, N. Y., assignor to International Business Machines Corporation, New York, N. York $1., a corporation of New Application December 12, 1935, Serial No. 54,009

13 Claims.

This invention relates to improvements in accounting machines and more articularly the record controlled tabulator-type of machine In many businesses, papers are destroyed by cremation or otherwise after they have served the purpose for which they were made. However, before they are destroyed, it is always well to make a record identifying the papers about to be destroyed as distinguished from the papers allowed to remain in existence. The forms of bonds, coupons and other papers are numbered serially and may thus be identified. Perforated cards are made to contain the data on the papers, and then these cards are sensed at a rapid rate to control the printing of an identifying record by the automatic tabulator machine of the present invention. Much space is saved on the identifying'record by printing only the first and last serial numbers of groups of sequentially numbered cards representing groups of papers to be destroyed.

A lot number is assigned to a selected number of serial number cards (500 in the present instance) and a cremation certificate is printed for each lot of cards.

Two different kinds of record cards are used to control the machine. The one kind of card is perforated to represent a single consecutive or 30 serial number and a lot number. The second kind of card is perforated with from and to numbers representing a run of serial numbers relating to a plurality of bonds. In addition, this run card also carries a lot number, a mum'- ber representing the count of bonds or number vide an improved form of printing device for recording groups of serially numbered data.

50 Another object of the invention is to provide means for automatically printing a sign to indicate that a pair of cards bear the same numbers when the numbers should be consecutive or differ by more than unity. The group control 55 devices have novel provisions for detecting coin- If two cards carry theciding serial numbers and controlling the printing of a special sign. 7

A further object of the invention is the provision of means for comparing serial numbers by subtraction, The number on a card is entered in an accumulator and a unit is added thereto. Then the number on the next card is subtracted from the first sum. If the cards are numbered serially or consecutively, the accumulator will be restored to zero, otherwise it will contain a num- 1 ber indicating a-break in sequence. When a break is sensed, automatic total and group number pirnting cycles are initiated to printthe last serial number of a run and the first serial number of the following run.

It is an object of the invention to provide an improved form of accumulator control whereby a unit is added in an accumulator for'each serial number card and a larger number is added in the same accumulator from a run card representing a plurality of serial numbers; the larger number being equal to the number of serial numbers. Thus an adding device is automatically changed from an item counter to an accumulator and vice versa. The total count printed under control of this combined counter and accumulator, provides a check to insure that all cards relating to one lot of bonds are present during tabulation.

Another object of the invention is to furnish accumulator devices which are adapted to be controlled from two different fields of perforations on two diiirent forms of record cards. This accumulator is provided to print to numbers under control of serial number cards and run cards. The accumulator is used in two different ways to arrive at the to number. When separate serial number cards are controlling, the from number, which is the serial number on the first card of a sequence, is entered into the accumulator and a unit is added thereto for each of the other cards numbered in sequence. Thus the to. number is added and may be printed by taking a total printing operation under control of the accumulator. When the single run card controls the accumulator, the to number is read directly from the to field on the run card and added in the accumulator and printed as a total.

The invention'is illustrated by a set of drawings which form part of this specification.

In the drawings:

Fig. 1 is a sectional elevation view of an adding and subtracting accumulator.

Fig. 2 is a sectional view of the card feeding and sensing devices. 53

' Fig. 5 is a sectional elevation view of the print-- Fig. 7 is a portion of a record card bearing aconsecutive number.

Fig. 8 is a portion of a run. record card containing from" and to numbers representing a sequence of serial numbers.

Figs. 9, 9a and 91; together form a wiring diagram of the machine.

Fig. 10 is a timing chart of the special cam contacts controlling the machine.

The present improvements are incorporated in a machine generally the same as the one set forth in U. S. Patent 1,976,617, issued to C. D. Lake et al., on October 9, 1934. For a detailed description of the ordinary mechanism, reference may be made to the patent.

The record cards Two kinds of record cards are punched to con trol the tabulator. A serial number card 20, Fig. '7,

a0 is perforated to represent the number of a single bond and the number of the lot in which the bond is placed. In the illustration, 8323 is'the bond number and 3 is the lot number. The other control card or run card 2i, Fig. 8, is perforated to 85 represent the first andlast serial numbers of a.

group of bonds in consecutive order. This run card is also perforated to represent the lot numher and the counted number of bonds in the group. It carries a special perforation or X hole 4 22 to distinguish it from the serial number cards 29. The perforations in the sample card of Fig. 8 show 3 as the lot number, 8349 as the from number, 8361 as the to number and 13 as the count of bonds.

The cards are sorted and arranged in numerical order before being placed in the tabulator.

Record sensing A series of feed rollers 29 and 24, Fig. 2, move the record cards 29, 2| in the usual way, down between a line of upper sensing brushes UB and a contact roller 25; and then, one cycle later, down between a line of lower sensing brushes LB and a contact roller 26. When a card is under the upper brushes it operates a lever 21 to close 55 in the machine.

As the cards pass the brushes, the perforations therein allow contact between brush and rollerand initiate impulses at differential times. i

The upper brushes 0B are used to control the machine through class selection and automatic group control devices, while the lower brushes LB lead to the accumulation and print control magnets. In this case the upper brushes UB also control accumulation in the :two subtracting accumulators.

The accumulators The machine is provided with five accumulators which may be distinguished on the wiring diagram Figs. 9, 9a and 9b, by the numbers l-5. The print magnets of accumulator l are used to print the from numbers. Accumulator 2 is used to count, add, item print and total print the "to" numbers- Accumulator 3 is operated to count and add the number of serial numbers in alot 10 I and the total count is printed therefrom at the bottom of the cremation record. The other two subtracting accumulators l and 5 are operated alternately in addition and subtraction to compare successive numbers. to determine if they are U in consecutive order. As soon as a sequence of serial numbers is ended, either accumulator 4 or accumulator 5 initiates a total recording cycle to print the last serial number or the to number of the group under control of accumulator 2 20 before starting the recording of new run of cards. Before considering the electric controls shown in the wiring diagram, it is believed well to explain briefly the mechanical construction of the various accumulating and printing units. 25

Adding devices In Fig. 1 is shown a central section of one of the subtracting accumulators and the entering mechanism for additively entering items into this 30 accumulator will now be described.

The same entering mechanism is provided in each of the other accumulators and the description of one of them will therefore suflice for the remainder.

The accumulator drive shaft 44 is in operation as long as cards are feeding. For each of the accumulators there are gear connections between shaft 44 and a shaft 68. The ratio is such that shaft 68 makes one complete revolution for each cycle of the -machine; that is, for each card analyzed, shaft 68 makesone revolution. shaft 68 drives a clutch shaft 69 through a pair of gears I0. Shaft 69 has slidably mounted thereon, but keyed for rotation therewith, a number of clutch elements II, Fig. 4, there being one for each denominational order position of the accumulator. The member II is provided with a groove in which fits the end I2 of a lever I3 which is pivoted at I4. The lever I3 is provided with a block I5 normally held in position by an armature I6 of an accumulator magnet 11. A leaf spring I8 bears against the end of lever I3 and moves the same upon release of block I5 by armature I6.

This movement will bring clutching'member II into engagement with co-oper'ating teeth 19 integral with a gear 89 loosely mounted on shaft 89. Gear 89, when thus coupled to shaft 69, will, rotate a gear 82 which meshes therewith and dis- 60 place the accumulator index wheel 83. The rearward extremity of arm I3 is adapted to be engaged toward the end of each cycle by a finger 84 carried on a bar 85,for the purpose of disengaging clutch element II from teeth I9 and 55' relatching block I5 on armature I6. The operation of bar 85 is controlled by a linkage operated by a cam on shaft 68. Near the end of each cycle, bar 85 is moved to the right, Fig. 4.

Briefly summarizing the adding operation, the 7 magnet 11 may be energized at various points in the cycle of the machine,- depending upon the location of a perforation in a column of a record card analyzed by the lower brushes LB. This en-' 'ergization may take place in response to a per foration in any of the index point positions from 9 to l, inclusive. A perforation in the 9 ition will trip the clutch element iI nine steps before finger 86 is operated to de-clutch it, and a perforation in the 1 position will trip the clutch element II one step before it is de-clutched by finger 84. Each step of clutching engagement corresponds to a tenth of a revolution of the accumulator index wheel 83 so that a 9 hole will move it nine-tenths of a revolution and a 1 hole will move it one-tenth of a revolution. The manner in which circuits through the lowel brushes LB control the operation of magnet ll will be set forth in connection with the explana' tion of the circuit diagram.

.The magnet armatures 76, Fig. 1, are also positively restored toward the end of the cycle by a face cam 9d carried by gear II? which engagesa 4 sliding plate 95 to move the same longitudinally whereby eccentric studs 96 thereon will engage.

extensions on armatures I6 and rock the latter away from their magnets ll.

Carrying devices the wheel 83 passes through Zero position, a high tooth of carry cam 99 will engage and rock its pawl Hi6, which through an extension thereon will rock a spring-pressed latch i614 downwardly.

This latch normally serves to hold the member I02 of the next higher order in the position shown in Fig. l.

Release oi the member I02 will permit a spring I05, connected at its upper end, to rock the same in a clockwise direction and permit its pawl to engage the next adjacent tooth on the cam 99. This. tripping action takes place during entering portions of the cycle at which time the carrying bail I06 is in a position shown in Fig. 3. After the entering portion of the cycle, the bail is rocked back to the position of Fig. 1, carrying with it all arms I02 which have been tripped by the carry cams of the next lower orders and will thus enter a transfer unit in the proper denominational orders.

Total read-out devices Also driven by gear 88 (Figs. 1 and 4) is a gear I09 which is displaced in the same manner as index wheel 82. Since the rat o of gears' I09 and 82 is two to one, the former will turn through half a revolution for each revolution of the latter. Carried by and insulated from gear I09 is a holder I0? with a pair of electrically connected brushes IIU, one of which cooperates successively with ten conducting segments II in an insulation frame H3 While the other cooperates with an arcuate conducting strip H2. The relationship of the parts is such that when the index wheel 83 is in its zero position, one of the brushes IIII is in contact with the zero segment I I0 (Fig. 4) and the other brush is in contact with the strip IIZ,

- thus forming an electrical connection between the two.

If the wheel 83 is displaced to indicate say 8, then one of the brushes IIII will be in contact with 8 segment II and the other brush will be in contact with the strip H2. The positioning of the brushes II 0 provides a convenient electrical read-out mechanism for controlling total printing operations and the electrical circuits involved in Subtracting devices The description of subtraction mechanism about to be given pertains only to accumulators #t and #5. Subtracting in the present machine is of the type known in the art as direct subtraction; that is, it is distinguishable from tabulators in which the amount to be entered is first converted into its complement by so-called translators and then this complement additively entered by the regular adding mechanism. In the operation of the present subtracting counter, the entry of the nines complement of a number to be subtracted is effected by initially tripping all the adding magnets I'll as though to add nine in each position and causing the'perforation in the record card to de-clutch the adding mechanism in accordance with the location of the perforation. This will result in the addition of the nines complement of the number. The elusive one is added in the units order of the accumulator independently to thereby change the nines complement to a tens complement.

For example, if an 8 is to be subtracted in a. particular order, the related adding magnet W is tripped at the 9 position in the cycle of the machine and the index wheel will commence to rotate. I At the next index point position, which is 8, the perforation will, through the mechanism to be presently described, cause de-clutching of the mechanism after the index wheel 83 has turned through one step with the result that a one is added into the index wheel, thus representing the nine complement of 8. The mechanism for efiecting this de-clutching action will now be described.

A subtraction operating shaft H5, (Fig. 4) has gear connections to the accumulator drive shaft 69, the ratio being such that shaft I it makes two revolutions for one revolution of shaft 59. Secured to shaft-I it are a plurality of clutch elements I IV, one foreach denominational order position of the accumulator and cooperating with each element isa clutching dog H8 pivoted at II!) to a cam I20 freely mounted on shaft M6. Also freely mounted on the shaft is a triple-armed member I2I one of whose arms engages a pin I22 in the 'free end of dog II 8 to hold the latter out of engagement with the driving element I'I'i. Each of the arms of member I 2| is adapted to cooperate in turn with a pawl I23 which is carried by clutch element I 24 which is pivoted at I25. The pawl I23 is resiliently mounted on element I24 through spring and pin connection I 26. A magnet armature I2! pivoted at I28 and having .a pin I29 in a laterally extending arm thereof is adapted, upon energization of a subtracting magnet I3ll, to rock element I24 in a clockwise direction to release member I2I thereby permitting spring I3! to rock the element in a counterclockwise direction through pin I22 and at the same time permit the engagement of dog II8 with the driving element Hi. The cam I20 will thus be driven in a counterclockwisedirection until the next arm of member I2I is engaged by pawl sea,

and interruption of further movement of the cam. The cam I23 is provided with three notches I32 about its periphery, into which a roller I33 rises successively.

5 Upon the initial movement of cam I23, the

higher, concentric portion of cam I23 will depress roller I33 and with it slider I34 upon which the roller is pivoted. A pin I35a extending axially from roller I33, engages a horizontal arm of element I24 to cause the positive restoration of clutching pawl I23 and armature I21 immediately after the clutching action. Slider I34 has adjustably connected thereto a slider I35 which is vertically adjustable with respect to slider I34, as

by screw and slot connection I35. The lower end of slider I35 is provided with a notch into which the horizontal arm of a bell crank I31 is fitted. The bell crank is pivoted at I33 and its depending arm lies adjacent to an edge of the clutch arm 13 so that the downward movement of slider I will cause the bell crank I31 to engage and move arm 13 in a declutching direction at a time determined by the time of energization of magnet I33 which is controlled by a circuit extending 25 through a lower card sensing brush LB.

It is desirable at the time of declutching the adding mechanism to also cause the positive restoration of the armature 13 of magnet 11 which ordinarily would not be positively restored until the end of the cycle. This is effected through an arm I33 pivoted at I43 and having connection with the slider I34 through a stud I4I. Arm I33 carries a spring-pressed pivoted finger I42 whose downwardly extending portion is adapted to engage the armature 13 and move it away from its magnet 11. A spring I43 is provided to move arm I33 and incidentally slider I34 upwardly after they have been depressed.

. Arm I33 is also provided with an offset finger I44 which engages a horizontally slidablerod I45 whose opposite end is connected through a pin to a finger I45 pivoted at I41. The free end of finger I43 lies in the path of spaced pins 31 on gear 32, and the finger will be moved into cooperation with one of the pins 91. at thetime that declutching is effected as just described. This will prevent over-throwing of the index wheel 33 which might otherwise take place due to the high speed at which this mechanism is W operated.

Elusive unit and adding unit entry devices The mechanism by means of which an elusive unit or an extra adding unit is entered into an accumulator is illustrated in Fig. 3. Associated with the units orders of accumulators 2; 4 and 5 are transfer devices and a control magnet such as that shown in Fig. 3. An entry magnet I43a associated with accumulator #2 is energized on 30 each card cycle of a group, except the first card cycle which is a from number entering cycle, in order to form a "to" number. The other two unit entry magnets I43!) and I43c are associated with the subtracting accumulators 4 and 5 and are operated therein for two reasons; to make up a consecutive number for comparing control and to flll out the complement in subtraction, as explained more fully with reference to the wirin diagram. As an example of a unit entry device, Fig. 3, .the units order of accumulator 2 has associated therewith a magnet I430 whose armature I 43 is secured to the carry lever latch I34 of the units order, so that energization of magnet I43a will trip the units pawl carrying arm I32, whereby during the carrying portion of the machine cycle, the pawl I33 associated with the units order will advance the units wheel one step.

Accumulator resetting mechanism Resetting of each accumulator is effected in the following manner: The shaft I53 (Fig. 1) upon which the index wheels 33 of an accumulator are loosely mounted is notched for cooperation with spring-pressed pawl, I5I, pivoted upon 10 Printing mechanism Listing-The printing mechanism is shown in sectional elevation in Fig. 5. The listing shaft I35 drives this mechanism during listing opera tions, and the totaling shaft I33 drives it during total taking operations. Shaft I35 is geared to the drive shaft 44 and motor TM and is operated thereby only during card feeding cycles when listing-control is selected. Secured to shaft I35 (Fig. 5) is a clutch driving element I13 with which a spring pressed clutching dog I1I is adapted to cooperate. The dog is pivoted at I12 to the listing box cam I13 which rotates with the shaft I35 only .when the dog "I is in engagement with driving element I13. The dog is normally held in the position shown in Fig. 5 by a clutch operating arm I14 mounted upon. a shaft I15 which is normally biased in a clockwise direction by a spring "3. When the machine is conditioned for listing operations, that is, when it is desired to operate the printing mechanism for 5 each card fed through the card feeding mechanism, the clutch arm I14 is rocked out of engagement with the dog Ill and maintained in such disengaging position.

Tabulating.-"Ihe tabulating form of operation 50 her) is printed, the accumulator is reset, and a single listing cycle follows during which the first bond number on the first number card of new group (i. e. a "from number) is printed.

The tabulating or total shaft I33, Fig. 5, is 35 adapted to be clutched to a reset drive motor RM under control of a magnet I31, Fig. 9,'as described more fully hereinafter with reference to the'wiring diagram. This motor RM operates for total taking and reset operations only. Shaft 70 I33, Fig. 5, carries a cam 23I whichoperates the printing mechanism during total taking operations.

During tabulating operation the listing clutch arm I14 is in engagement with dog "I at all The shafts I 53 may be selectively l5 times except on the first cycle following a total taking operation. The machine is so arranged that shafts 65 and H56 are incapable of concurrent operation and mechanism is provided for causing a single revolution of cam I13 to follow each revolution of shaft I66. A pin 202 carried by cam 28! is adapted to engage the free end of an am 203 which is secured to shaft M5 to rock the shaft in a counterclockwise direction and release clutching dog ill for engagement with driving element H0. This action is effective to permit so-called first card or group number indication; that is, permit listing data directly from the first card of each group which is being tabulated, when the machine is set for tabulating operations. Under such conditions the clutching dog l'll is normally held out of engagement with its driving element. Since the rocking of arm 293 by pin 202 is momentary, the

shaft H5 will return to its latching position and,

cam H3 will come to rest after a single revolution, which is concurrent with the analysis by the lower brushes of the first card of a new group passing through the card feeding and analyzing section.

A printing. cross head 204 is mounted for vertical reciprocation on guide rods 205 and is connected by links 206 to arms 20] secured to a shaft 208. This shaft has secured thereto a doublearmed member 209, one arm of which cooperates with a follower arm 2!!! actuated by total cam 26! and the other arm cooperates with a cam I follower 2H operated by a cam groove H58 in the listing cam I73. Because of this construction, it is apparent that shaft 208 may be rocked and the cross head lifted under control of either of the two cams.

Type bar operation.slidably mounted in cross-head 204 are a series of type bars 2l2 suitably guided for vertical reciprocation. Their lower ends abut the free ends of arms 2L3 pivoted at 2M to the cross-head 204 and held in the position shown in Fig. 5 by springs 2l5. Thus, upward movement of cross-head 2134 will be accompanied by movement of type bars 212 in the same direction under the influence of springs M5. The type bars are provided with a plurality of ratchet teeth 216, which cooperate with stopping pawls2ll so that the type bars may be interrupted atvarious positions to present any of their type elements 2; in line with the printing platen 219 for cooperation therewith.

By virtue of the spring connection M5, the bars 212 may be stopped without interfering with the upward movement of the cross-head which has an invariable extent of reciprocation controlled by the cams 201 and H3. The stopping pawl 211 is normally held in inoperative po- I sition by a spring-pressed pivoted latch Zlla, whose lower end is connected by a rod 220 to a bellcrank member 221 which is pivoted at 222 and one arm of which constitutes the armature of a printing control magnet 223. Energization of magnet 223 will rock bell crank member .22l in' sent in printing position that type element 218 corresponding to the controlling perforation.

Associated with each type bar 2|2 is a springpressed printing hammer 224 pivoted at 225.

The hammer normally rests against an operating bail 226 in a counterclockwise direction through the link 22?. As the lever 20? reaches near the upper end of its stroke, a pin 232, carried by arm 232, will engage a fixed stud 233, which will then act as a pivot for the arm 230 so that further,

upward movement of connection 23! will cause counterclockwise rocking of arm'230 with stud 233 as a pivot, causing the arm to release 'member 228. The spring 229 will thereupon rock the member 228 rapidly in a counterclockwise direction, forcing bail 226 against the hammers 224 so that the latterwill strike the type elements 2i8 which are in printing position to'effect impressions on recordstrip- 200.

The record In Fig. 6 is-shown a sample cremation certificate record 200 produced by the printing control devices of the present invention. The from numbers are in the left columns and the related to numbers are directly to the right-of them. The destroyed bonds may be identified by observing a from memberon the left, such as number 8349, and then noting the to number '8361 directly in line therewith. This shows that the bonds numbered 8349 to 8361 inclusive, or 13 bonds numbered in consecutive order have been destroyed.

To determine the identification and-number of bonds not destroyed, it is only required that a certain to number such as 8361 be noted and then tracing down one line diagonally to the left a number 8365 is found. This shows that bonds numbered 8362 to 8364 or 3 bonds numbered in consecutive order have not been destroyed.

The printed letter D in line with number 10525 shows that an error was made in punching record cards corresponding to the bond numbers. Two cards were punched for number 10525. This letter D is printed automatically by the special type carrier under control of the group control devices as explained hereinafter.

The number 500 printed at the bottom of the sheet is a record of the total number of destroyed bonds included in the lot recorded on the certificate. It is printed as a total under control of accumulator #3 which adds a unit for each bond.

number card and adds the count of bonds on run cards.

The printed numbers. may be arranged in two long columns or, after a certain number of lines are printed, .the tabulator may be stopped so that" the operator may space the carriage. This is done to arrange the numbers in four lines in a more compact formation on the cremation certifi-cate as shown in Fig. 6.

Consecutive number comparing controls The subtracting accumulators 4 and 5 are provided with means for comparing successively en- I tered numbers to determine if they are in con secutive order. As long as the numbers are consecutive the comparing means permits continued card analyzingoperation of the tabulator without printing, however as soon as there is sensed a number not in order, a total taking operation is initiated to print a counted "to number under control of accumulator 2.

The comparlngdevices include a rear spot Hr,

Fig. 4 and'a front spot H! in each of the insulation frames H3. Cooperating with the spots are a pair of brushes H4 fixed in a holder H5 fastened to the side of gear I 09 opposite to the side on which brush holder I! is fixed. Thus each gear 109 in the subtracting accumulators 4 and 5 carries .two read-out brush holders, the

' one for reading out totals and the other holder I I! for making comparingconnections.

Brushes H4 are used solely for establishing contact between spots Hr and Hf. .Although the brushes H4 touch the segments II they do 1 order of an accumulator when the devices of that order register 9. This is done because comparing is accomplished by adding a number plus one on the first cycle of operation, and then on the next cycle the nines complement of the following number is added thereto and a comparison made before the elusive unit is added. If the numbers are consecutive there will be a 9" in each order of the accumulator and brushes I M will connect spots Hr and Hf. The spots in the various orders ofthe accumulator are connected by cross wires 508, Fig. 9, running from a spot Hr in one order to the spot H] in the next higher order. The bridging of all the openings between spots Hr and Hf in all the. orders by brush holders 1 l5 positioned at "9 serves to complete a consecutive comparing circuit which continues the operation of the machine as explained hereinafter with reference to the wiring diagram. Should any accumulator wheel stand at any position other than 9" at comparing time, then the brushes H4 are removed from the spots and the com-paring circuit is broken, the card feeding operation is interrupted and a total is printed.

In the same complement entering cycle that the comparing connections of an accumulator are tested, and after such a test is made, the elusive unit is entered to fill out the complement. If the two numbers added and subtracted in the accumulator were consecutive, all the wheels are at .QKand the addition of the elusive unit turns them all to zero in readiness for another comparison. Should an accumulator register anything but all-nines due to a break in consecutive numbering, then that accumulator is reset during the total taking cycle which follows a break in the comparing circuit.

The-wiring diagram The diagram in Figs. 9, 9a and 9b is 08 interest in connection with an explanation of the operatlonot the machine as a whole. I

A switch S, Fig. 9, connects lines 242 and 2 to a source of current. Card feeding is initiated by depressing a start key to close contacts ST. The circuit through contacts ST includes line 240, contacts Pl, tabulatlng clutch magnet 242,

ing motor TM as follows: from line 240, motor TM, contacts 241a to line 24I, thus initiating operation of the motor and card feeding.

An emergency start button is provided to close contacts 250 and energize magnets 242 and 241 by a circuit extending through contacts L2.

As the cards pass through the two sensing stations they first operate lever 21 to close the upper card lever contacts UCL and then one cycle later they operate lever 28 to close the lower card lever contacts LC. Magnets ULM and LLM in line with contacts UCL and LC respectively are energized when the contacts close. The magnets establish holding circuits through Mm 248, contacts L5 and L6, and wire 249 by closing contacts UCI" and LC! in line therewith. These card lever magnets ULM and LLM control' various circuits throughout the machine in a manner which is noted as this specification continues.

A reset operation may be initiated by manually closing contacts R. This completes-a circuit from line 2, contacts L2, contacts 244b, contacts B, relay 25f and contacts P3 to line 240. Magnet 25! closes contacts 25Ia to set up a holding circuit which is extended through magnet I91 when contacts L4 close. Magnet I91 trips the reset clutch mechanism and closes contacts 253 to direct a circuit through the reset drive motor RM.

' Neither a manual nor automatic reset operation can take place during tabulating operation because then the contacts-254, in line with magnet !91, are held open by a magnet 252 normally energized as long as the consecutive comparing control devices sense consecutive numbers. As explained hereinafter, when a pair of members fall to be consecutive, a magnet 246 is deenergized to close normally-open contacts 24Gb. These .contacts are in line with an automatic reset switch 255 which is closed for comparing operation, contacts L3, magnet 25! and contacts P3. When contacts L3 close near the end of the last tabulatlng cycle, magnet 25! is energized. This magnet then opens contacts 2Ilb and deener-.

gizes magnet 252 which permits contacts 254 to close in readiness for a reset operation.

For a detailed account of the operating controls shown at the top of Fig. 9, reference-may bemade to Patent 1,976,617 mentioned hereinbefore.

Accumulator I, Fig. 9a, is used to print the bond n ber on the first card of a consecutively number d group. The number is sensed as the card passes under the lower brushes LB. The impulses from the lower brushes are directed through contacts G1 which are operated so that only the first number of a group is printed by accumulator I. Contacts GI are controlled by a magnet GIR which is energized on the first cycle following a reset cycle.

D is added in accumulator 2.

During any resetting cycle, cam contacts P close to complete a circuit from line 24! card lever contacts LC, contacts P5, wire 555, relay magnet GIH, wire H56 and wire 249 to line 240. The consequent closure of contacts l5l will establish a circuit from line 24!, contacts LC, contacts Ll, contacts I57, magnet GIH and wires H56, 249 to line 240. Coincident with the energization of magnet GIH, a parallel circuit extending from contacts P5, through a switch 618, group indicating magnet GIR and wires E56 and 249 to line 240, will energize magnet GIR to cause closure of contacts GI. A holding circuit for magnet GIR will thereupon follow from line 24 l, contacts LC, contacts Ll,- contacts I51, wire I55, switch GIS, magnet GIR and wires H6, 249 to line 240. The contacts GI will therefore be closed upon initiation of the card feeding cycle which follows a resetting operation and will remain closed during the entering portion of the cycle and permit the completion of circuits from the lower brushes to the devices to be controlled. Later in this first card cycle, cam contacts L7 open to break the holding circuits and magnet GIR will be deenergized, permitting contacts G1 to open so that further entries from the lower brush positions connected to the contacts GI will be suppressed.

A printing circuit may be traced from the lower brushes LB, through the GI contacts and into .accumulator i and the print magnets 223 associated therewith. There is a corresponding circuit for each denomination of bond number perforations. The circuit runs from line 24L Fig. 9, through breaker contacts ill, contacts LC2, contact roller 26, lower brush LB, socket 3i, wire to socket 37, contacts GI, socket 38, wire to socket 39, Fig. 9a, then through the adding magnet ll and around through contacts H9 to the printer magnet 223 and wire I80 to line 240. Thus a from number is printed such as those shown in Fig. 6.

At the same time that a from number is printed, it is added in accumulator 2 so that a unit may be added thereto for each additional operation in order to form a to number. The connections from the lower brushessensing the from number continue from socket 39, Fig. 9a, through a wire to a socket 40, and normally closed contacts 54, socket 4|, a wire to socket 42 in accumulator 2, adding magnet 11 and wire Hill to line 240. Since these adding connections are under the influence of the GI contacts, only the first number of a series of consecutive numbers After the first cycle of operation; additional units are added under control of a magnet |48a mentioned hereinbefore. This magnet l48a is ineffective during the first cycle. It is made ineffective by the operation of magnet GIR, Fig. 9a, in opening contacts 882 in line therewith. After, the first cycle of each group, contacts I82 are permitted to close and an impulse is directed through magnet 148a on each operation by a contact L30. This circuit may be followed from line 240, through Wire necessary to add the from" number and build up a to number, because the to number is 53, impulse timer I85 for closing a circuit only at the as time, magnet XH, contacts U04 and line 246. Magnet XC is energized in parallel with magnet XH over connections through timer U85, magnet coil XC, contact points U04 and wire to line 240. Magnet Xl-l sets up a holding circuit for magnet XC by closing contacts I81. The circuit includes contacts UC4, magnets XH and XC,

contacts #81, wire I88, contacts Ll8 and'wire i89 to line 241.

When the last card passes from the upper brushes UB and allows contacts UC4 to open, a shunt is established around contacts UC4 by the closing of contacts Lll which remain closed until the last card is analyzed under the lower brushes LB.

Over these connections, magnet XC is held energized as the 'run card is sensed under the lower brushes. Near the end of the card reading cycle, contacts L-i8 open momentarily to deenergize magnets X0 and XH. If the following card is a number card 20, magnets XH and X0 remain deenergized, but if another run card 2| is presented, the upper brush senses the a: hole and again activates magnets XH and KC.

The energized magnet XC, Fig. 9a, serves to' change the adding connections to the accumulator 2 by opening contacts 54 and closing contacts 55. These closed contacts lead to the lower brushes LB sensing the field of the run card 2! containing the to number, such as the number 836i on the card in Fig. 8. An example of the run card to sensing circuits .lmay be traced 'on Figs. 9 and So by following from the lower brush LB connected with asocket 43, Fig. 9, through a wire to socket 44, Fig. 9a, closed contacts 55, socket 4|, a wire to socket 42 and through the adding magnet 11 to the line.

As this to. number is added in accumulator 2 from the run card. the from number in the same card is printed as sensed by brushes LB just as the numbers on the ordinary cards are printed as explained hereinbefore. This is possible because the numbers on cards 20 are in the same field as the from numbers on run cards- ZI, and the opening of contacts 54 does not halt entries into accumulator and print bank #I.

' Thus the t0 number is accumulated in accumulator 2 in two ways, directly from a run card or built-up by adding a from number plus a unit for each cycle. At the end of either type of operation the to" number is registered as a total in the accumulator. In order that it may be printed on the record sheet 200, a total printing and reset cycle is initiated every time a run card is sensed and every time there is a break in the consecutive numbers. The automatic total and reset cycles are initiated by the magnet X0 and by'the consecutive number comparing 'devices in accumulators 4 and 5 in a manner set forth hereinafter.

Accumulator 3 operates to count and add the number of bond numbers considered during the sensing of a lot of cards. It is governed in two ways; to add a unit for each number card 20 and to add the count of bonds, such as the numher I3, Fig. 8, on each run card 2|. It is controlled by magnet XC to distinguish between number cards and run cards in somewhat the same manner that accumulator 2 is controlled.

When ordinary number cards are sensed, the

' units order of accumulator 3 is connected to a card counter contact CC, Fig. 9, through :6 controlled contacts 56, Fig. 9a.. Contacts CC close at the 1 time in each card cycle in a manner suited to add a unit in the accumulator connected thereto. The circuit connections for counting bond numbers in accumulatorv 3 may be traced beginning at line 24I, Fig. 9, breaker contacts I", contacts LCZ, contacts CC, socket 46, a wire to socket 41, Fig. 9a, contacts 56, socket 48, a wire to units order socket 49 and through adding magnet TI and wire I80 to line 240.

When a run card 2| is sensed under the upper brushes, magnet X0 is energized and acts to break contacts 55 and close contacts 5'! connecting accumulator 3 tothe lower brushes sensing the field containing the total count of bond numbers on a run card. The adding circuit includes the lower brush LB connected to socket 5|, Fig. 9, a wire to socket 59, Fig. 911, contacts 51, socket 3o 48, a wire to socket 49, units order adding magnet 11 and wire I90 to the line. Thus the amount in the units order of the count of bonds fie-ld on a run card is added in accumulator 3. Should the amount be larger than a digit, the tens-order 35 digit is added by wiring from the tens lower brush LB with a socket 5It, Fig. 9, and a wire to socket 5Ilt in line with contacts 5', socket 48t, and a wire to socket 49t in the tens order of accumulator 3.

40 The number added in accumulator 3 is retained therein until an entire lot of cards has been considered. Then, when the machine stops due to the opening of the contacts UC2 at the upper brushes, a total printing and resetting op- 5 eration may be initiated by coupling accumulator 3 to the reset shaft and depressing the reset key. The record sheet 200, Fig. 6, may be positioned so that the total print such as the number 509 thereon, may be placed under the last to num- 50 her. Automatictotal recording from accumulator 3 may be had by setting the machine for major group control controlled by lot numbers.

It is desired that the amounts entered in accumulators 2, 3, 4 and 5 be withheld from print- 55'ing during the entering operations. For this purpose, switches NP2, NI-"3, NP4, and NP5, in line with the print control relays MCR2, MCR3,

MCR4 and MCR5, are closed. The print control relays operate to open the contacts I19 leading 00 to the print magnets 223 in the four accumulators. The circuit through the print relays runs from line249 through normally closed contacts 2460, contact LI4, wire I93, closed switches NP, normally closed contacts I9I, the print control 65 relays, wires I94 and I95 to wire I89 and line I 2. Cam contacts LI4 are closed during the entering portion of each cycle. Contacts L3I are also closed during entering, to act as a shunt around contacts 24Iic until after the 0 point 15 Switch NPI is opened to deenergize print control magnet MCRI so that the contacts I19, Fig. 9a, of accumulator I remain closed permitting printing of the from numbers.

In Fig. 9b there is shown the two subtracting accumulators 4 and 5 which are used for com- 5 paring successive numbers to determine if they are consecutive. These accumulators are alike in construction so that a description of one applies to the other. Before explaining how they are operated alternately in addition and "\ubtrac- 10 tion it may be well to point out the general construction and mode of operation of these two subtracting accumulators.

When a number is to be additively entered into accumulator 4, a magnet A4 is energized in ad- 5 vance of the analysis of the record perforations representing the number to be entered. This will close contacts 234 during analysis so that circuits to the plug sockets 52 and 63 connected by wires to'the sockets GI, Fig. 9, of the upper brushes UB 20 will extend through contacts 234 to the adding magnets 11.

If a number is to be subtractively entered, magnet S4 is energizedimadvance of the analysis of the number, closing its contacts 235 and a sin-. .25 gle contact 236-. The latter contact is connected to cam contacts L23 and circuit breaker contacts I11 timed so that at thef9 position in the cycle in the machine, a circuit is completed from line 24I (Fig. 9), breaker contacts I", lower card lever contacts LC2, wire 239 (Fig. 9a), contacts L23, contacts 236, wire 253 and through all of the contacts254 to all of the adding magnets TI in accumulator 4. This trips all the adding wheel clutches of the accumulator at the 9 position and their index wheels commence to rotate.

As'the perforations in the card are subsequently sensed by the upper brushes, the circuits there-' through to the plug sockets 52 will continue through contacts 235, subtracting magnets I30, 40 to line 249, causing positive declutching of the adding wheels with the result that the number entered into the accumulator is the nine complement of the number analyzed by the brushes.

The carry magnet I48b in the units position is energized during the subtraction cycle. Magnet I48b actuates the carry mechanism of the units order so that in this position the number is complemented to ten. This magnet also operates on adding cycles in the present machine, in order 50' that consecutive numbers may be set up and compared in the subtracting accumulator.

Since both subtracting accumulators 4 and 5 are connected together to the upper brushes UB. Fig. 9, through wires between sockets 6| and 92, Fig. 9b, and wires between sockets 62 and 53 the alternate adding and subtracting operation may be produced by energizing A4 with S5 and A5 with S4. This is done by comparing devices which are about to be described. so

When it is desired that the machine operate with consecutive number comparing control, a switch CNS, Fig. 9a, is closed to select alternate adding and subtracting operation in accumulators 4 and 5. As soon as a card passes under the 65 upper brushes, magnet ULM is energized and it closes contacts UCI in line with switch CNS, 8. switch magnet SM and wire 255. Thus, magnet SM is energized andserves to operate many CS contacts throughout the machine. 7

A contact CS3 closed by magnet SM conditions consecutive number alternating relays for operation. A relay CNR is then energized by a circuit from line I, Fig. 9a, through wire 259, contacts CB2, wire 259, contacts L2I normally closed, con- 15 opens and L22 remain closed until near the end of a cycle.

Near the end of each cycle, while contacts L22 are still closed, a pair of contacts L32 close momentarily to energize the auxiliary consecutive number relay magnet CNA. The closing of contacts L32 is effective only on those cycles in which contacts CC? are closed. Then a circuit is formed from line 26!, Wire 258, contacts CS3, wire 259,

contacts L22, contacts CC'l, contacts L32, magnet CNA, wires Zti, 265 and 2% to line 2 86. As soon as magnet CNA is energized it sets up a holding circuit through associated contacts CAM and contacts L29 held closed until near the middle of the next cycle.

When auxiliary magnet CNA is energized it also acts to open contacts CAb in line with mag-.

net CNR so that at the end of the cycle, even though contacts L2H close while contacts L22 open, relay CNR will be deenergized. During the next cycle; contacts L281 open to deenergize magnet CNA and close contacts GAD, but relay CNR will not be energized until near the end of this cycle When contacts L2i again close. Then the aforementioned manner of operation is repeated when contacts L32 close to energize magnet CNA,

so that it may deenergize relay CNR for one cycle. From the foregoing description it is apparent that relay CNR is energized on alternate cycles of operation of the machine. The alternating operation of relay CNR is used to control connections for changing from addition to subtraction in the two comparing accumulators ii and 5.

Referring to the top of Figl 9a, it is noted that the adding and subtracting control magnets Ail, A5, St and S5 are in line with contacts controlled by magnets' SM and CNR. With both of these control magnets deenergized, both adding magnets A4 and A5 are adapted to be energized to condition the accumulators for use as adding accumulators. However, with the special controls selected, magnet SM closes contacts CSt and magnet CNR closes contacts 05a, (a. and Gila for the first cycle of operation.

On this first cycle of operation the closure of contacts C5a is inefiective to cause subtraction in accumulator 5. because contacts L63 are not closed until the. first card passes the lower bushes. no need to cause a subtracting operation with the passage of the first card under the upper brushes for at that time there is no number in accumulator 5 to be compared with the number on the first card. However, the number on the first card is added in accumulator 5 so that the number on the second card may be subtracted therefrom for comparison. The adding control circuit is as follows: line 24!, wire 262, contacts L2! closed during perforation analysis, contacts 03a, contacts CS4, contacts Cta, magnet A4 and wires 256 and 260 to line 2%. At the same time that magnet A4 is energized, contacts 06a are closed by magnet CNR to add a unit in accumulator 4 in addition to the number sensed on the first card. At this time contacts LCB are open to prevent operation of the other unit entry magnet I480 associated with accumulator 5. The c'ircuit through unit entry magnet 8b includes line 24!, wire 258, contacts CS3, wire 259, contacts This control is desired because there is L89, contacts 06a, magnet M85, and wires 265 and 26b to line 2w.

In the second entry cycle, magnet CNR is deenergized and the first card passes the lower brushes, energizing magnet LLM and closing contacts LE3 and L06. The alternating contacts are shifted so that magnets St and A5 are energized to enter the number on the second card subtractivelyin accumulator i and additively in accumulator 5. The circuit through magnet St includes contacts C3, wire 266, contacts L03, est

and Cd. The circuit through magnet A5 includes contacts 03, wire 2% and contacts C5. Thus, the number on the second card is subtracted from the first number plus one in accumulator i, and added in accumulator 5.

In this same second entry cycle, both unit entry magnets M82) and E ite are energized, the one to fill out the complement entered in accumulator 5 and the other to form a consecutive number for comparison in accumulator 5. The circuit through magnet M8?) includes contacts C6, wire 26? and contacts LCE. Magnet Mile is energized directly through contacts 06 and wire 28?.

The third entry cycle is somewhat similar to the that contacts LS3 and LCt are closed, magnets S5 and Mite are energized along with magnets A i and with. The circuit through magnet S5 includes contacts 03a, M33 and C501. The circuit through magnet M80 passes across contacts Ceca and. L05.

' This alternating entry form of operation continues as long as the numbers on the cards are consecutive and as long as no run card is sensed. When the added and subtracted numbers fail to compare in an accumulator, that accumulator is reset and a total print and reset cycle is initiated to print the "to number in accumulator 2. When a. run card is sensed, a reset and total print cycle is initiated in accumulator 2 and the subtracting accumulator which received the from number on the run card as a subtractive amount is reset. 4

Comparing is carried on in the subtracting accumulators by means of the spots Mr and Hi (Figs. 9 and 9b) and brushes HQ, described hereinbefore with reference to Fig. i. In Fig. 9 it is noted that these spots are connected by wires use between all orders across both accumulators. It is also noted that the end spots Hf are connected to a common line by wire 26%, and that the set of spots in either accumulator may be selected by closing contacts C2 or C211. Magnet CNE .controlling these contacts is energized hit first, the only diiierence being due to the fact alternately so that the spots selected are the ones in the accumulator in which subtraction is taking place, because that is the accumulator which is ready to compare successive numbers.

The brush holders H5 and brushes i it (Figs. 4 and 9b) are adapted to close all the breaks between spots 1 ir and Hf (Fig. 9) across an entire accumulator when the numbers entered therein are consecutive. In'line with the comparison wiring of accumulators 3 and 5 is the magnet 246 which exercises control the same as the usual minor group control magnet found in ordinary tabulators. This magnet must be maintained energized to keep the tabulatorrunning. As soon as it is deenergized, card feeding is stopped and a total print and reset cycle is initiated. At a certain point in each cycle (after amount entryv deenergize magnet 246 unless the comparison circuit is completed. The comparison circuit in accumulator 4 or 6 is complete at that time, only if all wheels stand at "9" with brushes II 4 con- 6 tacting spots H1 and III, as shown in Fig. 4. They assume such positions when the number corresponding to the nines complement entered is equal to the first number added plus one, denoting consecutive numbers.

and then close, one of the unit entry magnets I48b or I48c is eilfective to add a unit to the accumulator registering all nines, thus "restoring that accumulator in readiness for the next addi- 16 tive number entry.

The normal circuit for comparing control masnet 246 may be traced from line 2 through wire I88, contacts L28, wire 268, contacts CS2 closed when consecutive control is selected, wire 210,

20 magnet 246, wire 21I, magnet MI, contacts 212 and wires 218, 214 to line 240.

When contacts L28 open a testing circuitis formed from line 2, wire I68, contacts 216 closed except when a run card is sensed, wire 216,

26 wire 268 and then through .eitheraccumlator 4 or 6 according to which contacts C2 or C2a are closed by magnet CNR. This magnet operates alternately, as explained, to select the accumulator which received a complement and is there- 80 fore in condition for the consecutive comparison test. As shown, accumulator 4 is connected. The circuit continues from wire 268 through spot II], brushes H4 and holder II6, spot IIr, wire I08, spot II), etc., across the whole accumulator and through closed contacts C2, contacts 082, wire 216, magnet 246, wire 21I, magnet MI, con tacts 212 and wires 218 and 214 to line 240.

As long as this comparing circuit is maintained it is a sign that the cards are perforated with consecutive numbers and the machine continues in operation to feed, sense and compare the cards. However; should a run card be sensed, or the test connections be opened by brushes II4 missing spots II 1' and III, the circuit is opened and magnet 246 is deenergized. The sensing of the a: hole 22 in a run card serves to energize the magnet XC which then opens contacts 216 in series with the test connections. when magnet 246 is deenergized. denoting a break in consecutive numbering, the associated contacts 246a are opened to deenergize' the motor TM and stop tabulating operation, and contacts 246b are closed to initiate a reset operation. C1osed-contacts 246b send an impulse through 55 reset control magnet 26I.

.line 240, contacts P8, wire 211, magnet 26I, wide 218, contacts L8; switch 266, contacts 24: and line 2. The magnet'closes contacts 26in to w establish a holding circuit through wires 211 and Magnet 26I also opens contacts 26Ib to deenergize magnet 262 which allows contacts 264 to close energizing magnet I81 to close contacts 268 in series with the reset motor RM. Thus, the

' reset motor is called into operation and magnet 260 in line therewith is also energized.

. The deenergized magnet 262 allows contacts I82 to close so that magnet MCR2 may be en ergized to close contacts 28I, Fig. 9a, conditioning accumulator 2 for a total printing operation. -The,energized magnet 280, Fig. 9, closes contracts 262 to energize zero button magnets Z32 and either, 234 or ZB6,1to couple the reset shafts ofthe"a.ccumulators to i the reset drive shaft. .1s m printing control circuit may be The circuit includes traced throughcontacts I82 and magnet MCR2 from line 240, contacts PIII, wires 268, 284, brush holder 26.6, dial ring 286, plug wire 281, contacts I62, magnet MCR2, wires I84, I86 and I88 to line 2. Contacts PIO remain closed during the s printing portion of the total taking cycle andmagnet MCR2 accordingly keeps the contacts 26I, Fig. 8a, closed throughoutthe same period. After contacts L28 a 10 open to test the positions of the comparing wheels Contacts 28I connect the printing magnets 228 to the common conducting strips II2 of the acl0 cumulator read-out device in accumulator 2. During the total taking cycle an emitter 286 directs timed impulses through the spots II to the printing magnets 228 according to the positions of the brushes H0 in holders I01. total print circuits include line I, switch 288,

circuit breaking contacts 280, common bar 28I,

emitter brushes 282, segments 288, wires 284, cable 286, wires 286, spots II, brushes H0 and holders I01. placed differentially, common strips 20 H2, contacts 28I, magnets 228 and wire I to line 240. The print magnets stop the type bars in position to print a "tc number after which accumulator 2 is reset. The total count amount in accumulator 8 is printed in the same manner, 86 but only after all the numbers of a lot of cards have been recorded.

The zero button magnets 284 and 2B6, Fig. 9, associated with accumulators 4 and 6 are selected alternately by magnets CN'R which opens 30' contacts CI and closes contacts CIa. The zero magnet selected is the one associated with the accumulator receiving the complement, so that if the number thus entered fails to be consecutive or if a run card is sensed, the proper subtracting accumulator is reset.

When magnet 280 closes contacts 282, a circuit is established from line 2 through contacts 282 and wire 286 up to wire 288 after which the circuit branches out in two directions. One branch (6 includes magnet 2B2, dial sector 800, brush holder 60l, wire 802 and wire 808 to line 240. The other branch follows through magnet 236, contacts CI, contacts CSI and wire 808 to line 246. The energized magnets ZB2 and ZBI act to l couple the reset shafts I60 in accumulators 2 and 6 to the reset motor drive shaft so that these accumulators are restored to normal zero registering condition.

Thedevices for printing a "D to denote the 60 sensing of duplicate numbers on successive cards,

are operated by group control devices including magnets GC. These magnets GC are wired in parallel, a pair'for each control column on the card, and both cooperating with a common con- 66 trolvcontact GCC in the control circuit. -One of an associated pair of magnets GC is wired to an upper brush U3, and the other is connected to the corresponding lower brush LB so that if coinciding perforations are found in successive N.

cards, both magnets are energized at the same time and contacts 600 remain closed. When differing numbers are sensed on successive cards. only one of the pair of magnets is energized at a time and contacts GCC are opened. U. 8. Pat- 66 ent 1,988,849 may be referred to'for a more dea tailed ccount of this form of group control device.

The circuit through the magnets GC connected to the upper brushes is as follows: from 10 line24I through breaker contacts I11, contacts UCI, contactbar 26, upper brush UB, socket 6|.

a wire to socket 62, Fig. 9b, a wire to socket 68, from socket 68 a wire to socket 64,.Fig. 8, through left magnet 66 and wire 804 to-line 246. The I.

The 15 associated magnet GC is wired as follows: line 24!, contacts I", contacts LCZ, bar 26, lower brush LB, socket 3i, a Wire to socket 3?, right magnet GC, and wire 304 to line 2%.

When duplicate cards are sensed, all contacts GCC are closed and a duplicate sign printing control magnet DC is energized. Thecircuit for energizing magnet DC may be traced from line 241, wire 3U5,contacts U08 closed when a card 10 is under the upper brushes, wire 3%, a plug wire 30'! to one side of the first contact GC, contacts GO in series, a duplicate control switch 368, magnet DC and wire 309 to line 24b.

Magnet DC operates connections for printing a D on the group indicating or from number printing cycle which follows the reset cycle. Contacts 3"] are closed by magnet DC and late in the cycle contacts LH close to energize auxiliary magnet D02 providing the contacts LC, Fig.

9 are closed by the lower brush lever 28. Then a duplicate sign print circuit is made up as follows: line 2M, Fig. 9, contacts LC, wire H83, Fig. 9a, contacts 3m, contacts Li C, magnet D02, wire 3i i. wires 255 and 286 to line 2%.

Magnet DCZ closes contacts 362 to form a holding circuit therethrough and through wire tit and contact 3W so that when contacts Ll? are closed, magnets DCil and DCd are also energized. The circuit may be traced from line 2% through wires 2st, 258, an and 3M, magnets D83 and DOB, contacts 1A2, contacts 3E2, wire 5H3, contacts 3| 0, wire ms, Fig. 9, contacts LC and line 24H. Magnet D03 closes contacts M5 to form a holding circuit through contacts L28 which are held closed during the first part of the next list cycle. The circuit then includes line 246; wires 260, 256, SN. and 3M, magnet D93, contacts 3H5, contacts L28 and wire 262 to line 2 3 t.

, Magnet DC l, when energized, opens contacts (H6 so that if the machine is set for duplicate control without consecutive comparing control a reset cycle is induced by the group control devices including control magnet 266 in line with contacts alt. The deenergization of magnet 2% brings about a reset and total printing cycle when duplicate cards are sensed. However, when the machine is set for consecutive comparing control, contacts 082a are opened so that the action of magnet D04 is of no avail.

The other energized duplicate control magnet DC3, Fig. 9a, serves to close connections for stopping a type bar in position to print D. This type bar is controlled by magnet 223D in accumulator i and is the same bar that carries the 55 asterisk type and other special type. Contacts .320 controlled by magnet D03 are in line with magnet 223D. At a certain time in the list cycle, a contact L|3 is closed to energize magnet 223D and hold the special type bar in position to print 60 D. The circuit is as follows: line 2450, wire I88, magnet 223D, switch 32!, contacts 329, contacts U3 and wire 322 to line 24!.

Of course, when the machine is set" for consecutive number comparing control; as'soon as 65 duplicate numbers are sensed and detected by one of the two subtracting accumulators, a reset and total printing'cycle is initiated. It is only after this cycle, on the first from number listing cycle, that the closing of contacts LlELare efiective to print the'special duplicate sign such as the one shown in the third column on record sheet 200, Fig. 6.

While there has been shown and described and pointed out the novel features of the invention in 75 one form, it will be understood that various omissions, substitutions or changes in the form and details of the devices illustrated and in their operation may be made by those skilled in the artwithout departing from the spirit of the in vention. It is the intention therefore to be limit- 5 ed only as indicated by the scope of the following claims.

What is claimed is asfollows:

1. In a machine controlled by records perforated to represent groups of serial numbersa'r ranged in numerical order, means for analyzing said records one at a time, a pair of accumulator devices, means under control of the analyzing means for operating said accumulator devices alternately to add one serial number and subtract 15 the next serial number, means for adding a unit to the added serial number in the accumulator device operated in addition before the subtracting operation, means under control of said analyzing means for printing the first serial number of each 20 group, means cooperating with said accumulator devices for sensing the amount representing condition of the accumulator devices to detect a break in sequence of the serial numbers denoting the end of a group of serial numbers, and means 55 under control of said sensing means and said analyzing means for printing the last serial number of each group; 1

2. In a machine contgoiied by groups of cards presented in numerical order each containing in dicia representing a single serial number and other run cards each containing indicia 'repre sentative of "from and to numbers representing a plurality of serial numbers, means'for analyzing said cards, means connected with said ana- 35 lyzing means and controlled by single serial number cards for printing the first serial numbers of groups of serial number cards and controlled by the run cards to print the from numbers, an

accumulator controlled by the run cards to add 45 the to numbers, means under control of said analyzing means for operating said accumulator to add the first serial number of a group, means for operating said accumulator to add a unit for each serial number card of a group after the first 5 card, means under control of said analyzing means for determining whether or not successively sensed numbers are in serial order, means for detecting the appearance of a run card, means under control of said detecting means for suspending operation of said determining means when a run card is detected, total taking means cooperating with said accumulator, means under control of said determining means and said detecting means for initiating a total taking operation of said accumulator when there is an interruption in sequence-and means under control of said accumulator for printing the to numbers and the last serial numbers of the groups. I

3. In a machine controlled by groups of cards each perforated to represent a single serial number and other run cards each perforated with a special perforation and from" and "to representations of two numbers representing a plurality of intermediate serial numbers, said cards being arranged in numerical order, means for sensing the perforations representing the serial numbers on the groups of cards and from numbers on run cards, other means for'sensing the perforations representing the "to number on run cards, an accumulator, connections to said accumulator adapting it for control by the first mentioned sensing means to add the first serial number, means under control of the first-mentioned sensing means for printing the first single serial number of each group and "from" numbers, means for disconnecting said accumulator after the-entry of the first single serial number card is completed, means for adding a unit in said accumulator for each single serial number card sensed after the first, printing means cooperating with said accumulator, means under control of said special perforation to operate said printing means to print a total of. the sum in said accumulator to represent the last serial number of a group, other means under control of said special perforationior disconnecting said accumulator from the first sensing means and connecting the accumulator to said other sensing means, said printing means then being eflective for printing a record of the to number perforations sensed in a run card.

4. In a machine controlled by record cards perforated to represent groups of serial numbers in numerical order with a card for each number, means for feeding the cards through the machine one at a time, means for sensing the perforations representing numberson the cards, means under control of said sensing means for detecting when any of said sensed perforations representing serial numbers are not in serial order denoting a change in the serial card groups, means under control of said sensing means for printing the first serial number of each serial card group,

means under control of said sensing means for adding the first serial number of each group and including means for forming the last serial number of each group, means under control of said adding means and said detecting means for printing the last serial number of each serial card group, devices under control of said sensing means for determining whether the number on each card is the same as the number on the next card, a sign printing device, and means under control of said determining devices for operating said sign printing device to print a D in line with v the first number of a group when said first number is the same as the last number of the previous group.

. 5. In a machine controlled by records presented in numerical order each containing indicia representing a serial number, means for analyzing said indicia on the records, means for, feeding said records in succession, a pair of accumulators, means under control of said analyzing means for operating said accumulators to enter therein groups of serial numbers, one number at a time in numerical order, means cooperating with said analyzing means for adding-and subtracting the numbers in said accumulators, means associated with said accumulators for determining the additive or subtractive nature of the operation performed therein, an alternating means cooperating said alternating means for adding a unit in the accumulator operated in addition, devices associated with said accumulators for detecting whether an accumulator bears an amount determinative' of a consecutive relation between numbers borne by successive records, means under control of said alternating means for making effective the detecting devices in the accumulator operated in subtraction, after the subtraction operation, and means under control of the eiiectivedetecting devices for indicating when successive records bear numbers that arenot consecutive.

6. A machine according to claim 5 with a means cooperating with said determining and alternating means for suppressing the subtraction operation when the first number of a group is being entered.

7. In a machine controlled by records presented in numerical order each containing indicia representing a serial number, means for analyzing said indicia on the records, means for feeding said records in succession, an accumulator comprising-a plurality of adding wheels, means under control of said analyzing means for operating said accumulator to enter therein groups of serial numbers, one at a time in numerical order, means for adding a unit to the serial number first added in said accumulator, means cooperating with said accumulator for subtracting the number following said first serial number from the sum in said accumulator, commutator brushes adjusted by said wheels, a pair of commutator spots for each wheel upon which the brushes rest after addition and subtraction when successive numbers are consecutive, a magnet in series with wiring connecting said spots in a-circuit which is opened when successive numbers are not consecutive, and means effective when said magnet is deenergized for controlling the operation of. the machine.

8. In a machine controlled by records with indicia representing groups of serial numbers ar-' ranged in numerical order, means for analyzing said indicia on said records, a pair of adding means under control of said anaylzing means for alternately receiving successively analyzed serial numbers, means for connecting said adding means alternately to said analyzing means, subtracting devices cooperating with said adding means and made-alternately effective therewith by said connecting means, a device cooperating with said pair of adding means for sensing the condition of said adding means after addition and subtraction and thus determining whether successively analyzed numbers are in serial order,

another device cooperating with said analyzing.

under control of said accumulating means and said serial order determining device for printing the last number of each group of numbers on records in serial order, a sign printing device, and means under control of said identity determining device for operating said sign printing device when two successive numbers are identical.

9. In a machine controlled by records with indicia representing groups of serial numbers, said records being arranged in numerical order, means for sensing the indicia on the records, an accumulator comprising a plurality of adding wheels, cans under control of said sensing means for adding a sensed serial number in said accumulator, means for adding a unit to the serial number in said accumulatorfmean s cooperating with said accumulator for adding the nines complement of the number following said serial number to the sumin said accumulator, commutator brushes rest after addition and subtraction when a successive numbers are consecutive, a magnet in series with wiring connecting said spots in a circuit which is opened when successive records bear indicia representing numbers that are not consecutive, means effective when said magnet is deenergized for controlling the operation of the machine and means for adding an elusive unit in said accumulator to restore the accumulator when the two serial numbers entered therein diner by unity.

10. In a machine controlled by records with indicia representing groups of serial numbers, said records being arranged in numerical order, means forsensing the indicia on said records, a pair of accumulators, number adding devices cooperating with said accumulators and operated under control of said sensing means, unit adding devices cooperating with said number adding devices, subtracting devices cooperating with said number adding devices, and automatic cyclical control means for controlling the operation of the devices cooperating with the accumulator; first to condition the number and unit adding devices automatically for operation when the indicia of the first serial number is sensed and entered in one of the accumulators, and second, to condition the subtracting devices automatically for operation when the second serial number is sensed and entered into saidone accumulator as the other accumulator is operated for number and unit addition, means under control of said accumulator for determining when said first and second numbers are not in serial order, serial number printing devices, means cooperating with said analyzing means for adjusting said devices to represent first and last serial numbers of serial record groups, and means under control of said determining means for initiating operation of said printing devices to print the number of the last serial record of one group and the number of the first serial record of the next group.

11. In a machine controlled by record cards perforated to represent groups of serial numbers arranged in numerical order, each card representing a number which is-entered in one cycle of operation of the machine, means for analyzing said cards one at a time, a pair of accumulators;

means under'control of the analyzing means for selectively adding or subtracting said numbers in said accumulators, an alternating means for controlling said selective means to add a number in one accumulator and add the nines complement of the same number in the other accumulator and then on the next cyele'add the nines complement of the next number in said one accumulator and add said next number in said other accumulator,

means under control'ot said alternating means for adding a unit in the accumulator operated in addition to enlarge the number therein equal to the next serial number, means under control of said alternating means for testing the amount representing position. of an accumulator after the subtracting operation to determine if the two serial numbers entered therein differ by unity, means operated under control of said testing means when said two serial numbers do not differ by unity to print the last number analyzed which is the last serial number of a group and means for adding an elusive unit into the accumulator operated in subtraction to restore the accumulator when the two serial numbers entered therev in differ by unity.

12. In a machine controlled by groups of serially numbered records with indicia thereon representing said serial numbers on the records, said records being arranged in numerical order, means for feeding said records in succession, means for sensing the indicia representing said serial numbers on the records, means under control of said sensing means for detecting when any of said sensed indicia representing successive numbers are not in serial order denoting a change in the serial record groups, means under control of said sensing means for printing the first serial number of each serial record group, means under control of said sensing means for adding the first ing said records in succession, a pair of accumulator devices, means under control of said analyzing means for operating said accumulator devices to add serial numbers therein, unit adding devices cooperating with said accumulator devices, subtracting devices'cooperating with said accumulator-devices and said analyzing means, and automatic cyclical control means cooperating with the devices associated alternately with the accumulator devices; first to condition the operating means and unitadding devices automatically for operation in association with one accumulator device when the first record is analyzed, and second, to condition the subtracting devices automatically for operation when the number analyzed on the second record is subtractively entered into said one accumulator device as the other accumulator device is operated for number and unit addition, and means under control of said accumulator devices for indicating when said first and second records are not in serial. order.

WILLIAM W. MCDOWELL. 

